The deconstructed procedural description in robotic colorectal surgery

Increasing robotic surgical utilisation in colorectal surgery internationally has strengthened the need for standardised training. Deconstructed procedural descriptions identify components of an operation that can be integrated into proficiency-based progression training. This approach allows both access to skill level appropriate training opportunities and objective and comparable assessment. Robotic colorectal surgery has graded difficulty of operative procedures lending itself ideally to component training. Developing deconstructed procedural descriptions may assist in the structure and progression components in robotic colorectal surgical training. There is no currently published guide to procedural descriptions in robotic colorectal surgical or assessment of their training utility. This scoping review was conducted in June 2022 following the PRISMA-ScR guidelines to identify which robotic colorectal surgical procedures have available component-based procedural descriptions. Secondary aims were identifying the method of development of these descriptions and how they have been adapted in a training context. 20 published procedural descriptions were identified covering 8 robotic colorectal surgical procedures with anterior resection the most frequently described procedure. Five publications included descriptions of how the procedural description has been utilised for education and training. From these publications terminology relating to using deconstructed procedural descriptions in robotic colorectal surgical training is proposed. Development of deconstructed robotic colorectal procedural descriptions (DPDs) in an international context may assist in the development of a global curriculum of component operating competencies supported by objective metrics. This will allow for standardisation of robotic colorectal surgical training and supports a proficiency-based training approach. Supplementary Information The online version contains supplementary material available at 10.1007/s11701-024-01907-9.


Introduction
With increasing utilisation of robot surgical technology in colorectal surgery, training has become a focus of discussion internationally.Development of training curricula has focussed primarily on basic operational skills at the console and the bedside [1].International consensus has renewed recommendations for standardisation of robotic colorectal training [2,3].Specialty specific training in colorectal surgery, however, is not yet standardised and has been implemented in differing formats internationally [4,5].Furthermore, defining standardised objective assessments for accreditation can be challenging, as discussed in a recent systematic review [6].
Although variation in training structure is inevitable, there is a common challenge of meeting proficiency standards to maintain patient safety while the novice surgeon navigates the learning curve [7].Several published colorectal training curricula have therefore introduced component operating to give robotic surgical trainees graded autonomy through their training under guidance of a robotic surgical proctor [8].This approach to integrating training allows for trainees to participate at a level appropriate for their level of robotic operating skill once they have completed their simulation-based basic robotic skills training [9].
Training by component operating relies on the ability to break down colorectal surgical procedures into a consistently reproducible operative approach.This process is often referred to as procedural deconstruction and has been proposed as a solution for challenges in modern surgical training including generating a meaningful record of trainee participation in operative cases [10].Procedural deconstruction can be achieved through review of publications of procedures [11], generation of expert opinion [12], cognitive task analysis [13] or more recently though machine learning and artificial intelligence [14].Educationally, procedural deconstruction has additional learning benefits.Having a procedural description can assist trainees in learning complex cases by finding common features in existing knowledge [15].It has utility in reducing the mental effort required to learn a new task by breaking it down into more approachable chunks of knowledge [16,17], and can improve performance of procedural skills [18,19].Procedural deconstruction has even be used to guide novel training approaches such as teaching appendicectomy to a non-surgically trained space team [20].
The result of deconstructing an operative procedure is often published as a "standardised procedure".This can then be used to develop a specific assessment approach which is essential for a proficiency-based approach to training [21,22].In robotic surgery there is a growing importance of delivering training up to a specified proficiency standard and utilisation of a wider range of assessment metrics [23,24].Further development of these metrics in robotic surgical training would benefit from deconstructed procedural descriptions, allowing more targeted, procedure specific feedback for learners.Integration of novel technologies in training can then be structured around a component-based approach based on deconstructed procedural descriptions [25].
This systematic scoping review aims to identify which robotic colorectal operations have undergone procedural deconstruction and have published procedural descriptions.The literature will be used to develop an understanding of how these descriptions been determined and been incorporated into training.This information will be synthesised to present approach to educational design in robotic colorectal surgery using component operating and proficiency-based progression training.

Methods
A systematic literature search was conducted in June 2022.Databases included were PubMed, Embase and Medline.The search strategy included three groups of keyword terms combined with the Boolean operator AND (colorectal, colon, rectal), (procedure, standard, guide, steps, experience) and (robotic, surgery, minimally invasive).The full strategy is available as appendix a. Abstracts generated from this literature search were exported into literature management software for blinded review.Two reviewers (KL and NQ) independently assessed abstracts with papers extracted for full text review if they met the following inclusion criteria: papers describing a robotic colorectal procedure, published in English language, full text available published between 2002 and 2022.The relevant exclusion criteria were procedures described in the context of a case report or embedded within investigative publications and nonrobotic or non-standard training procedures.The full PRISMA search is included in Fig. 1 Data were extracted for included publications with disagreements for inclusion resolved by a third reviewer (HM).Simple descriptive statistics were calculated for mean number of procedural components.
Across the 13 publications that described an approach to rectal resection there was a mean number of 7 procedural components (range 4-14).The included procedural descriptions described the following procedural components; set-up (including patient and port positioning and docking), dissection/mobilisation, vascular control, resection, reconstruction (anastomosis ± stoma formation).

Determining procedural descriptions
Due to significant heterogeneity of the data presented, and limited data across a number of colorectal procedures, it was not appropriate to syntheses the available literature into a proposed deconstructed procedural description.The majority of the data describes robotic techniques relating to rectal dissection, however, lack a consistent structure and the lack of a methodologically rigorous approach to development of the procedural descriptions limits their utility in a training context.The most structured and applicable publications identified in this review [39,40] have been used to guide the development of a proposed approach to the use of deconstructed procedural descriptions in training.These publications have been used as a model given their rigorous approach to development of the description, detail included in the description allowing for meaningful assessment, and inclusion of a defined objective of informing training.
Based on the evidence collated, the following definitions have been formulated following a process of expert opinion to guide educational design moving forward in robotic colorectal surgery (Table 2).A procedure is deconstructed into components, which are a unit of meaningful operative autonomy consisting of either a procedural phase or step [40].The simplest arrangement of these components to complete the operation (for example the least number of changes in anatomical change in focus and logical progression) is defined as the training approach.This acknowledges that there are multiple possible combinations of phases and steps that can be used to safely complete the operation.A standardised component therefore refers only to components of the procedure that are required to be completed in a specific fashion for a quality, safety, or oncological outcome marker.
A deconstructed procedural description is therefore the foundation of this approach to training where the procedure is deconstructed into components by identifying the operative phases and steps.This should be achieved through a process of review which may include cognitive task analysis, and expert consensus preferably using a Delphi methodology.Process and procedural errors can thus be identified and mapped to their respective procedural components.This allows the development of objective assessment metrics to support a proficiency-based progression training approach.

Approach to educational design
Methods of development for each procedural description varied.No mention of a specified method of development was seen in 13 of the descriptions (65%).Expert opinion (procedure agreed upon by two or more surgeons) was cited by five articles [34,35,38,43,44].Two articles described a formal consensus process using a Delphi methodology [39,40].

Application in training
Inclusion of how the procedure was or could be used in an educational context was seen in five articles.Miskovic et al. discussed the value of adopting standardised procedures for training in their discussion [39].Tou et al. in their European consensus, sought to develop procedural phases for the purpose of developing a standardised colorectal surgery curriculum [40].The learning curve involved in developing robotic surgery skills was referred to by both Toh [41] and Hollandsworth [38].The video and article by Herrando et al.
were intended for the purpose of training surgeons [30].

Discussion
This review has identified the current scope of procedural deconstruction for the purpose of forming procedural descriptions and their role in directing educational design in robotic colorectal surgery.There are limited procedural descriptions across procedures commonly performed within a colorectal robotic surgical scope of practice.There are, however, published descriptions across most of the core set of robotic colorectal procedures, with the notable exclusion of rectopexy and right hemicolectomy.This is despite robotic right hemicolectomy being identified as a complete core training case in robotic surgery [46].Currently four published robotic colorectal surgical training programs utilise component operating [4].In this recent review by Harji et al. (2022) although component operating was included as part of the structure of robotic colorectal surgical training, a lack of detail of key progression criteria and consistency in proctoring approach were highlighted [4].This could be addressed through adapting standardised procedural components based on consensus published procedural descriptions to a structured progression of component skill.
Component training has been shown to be safe and feasible even in complex procedures such as rectal dissection [8,9].Even between these two examples of parallel componentbased training in robotic rectal surgery the approaches differ, with one training programme breaking down the procedure into 11 steps [8] and the other using five component parts [9].Although not based on a procedural description this approach to rectal dissection has been easily implemented, improving access to robotic console operating and assisting in directed, objective goal setting for trainers and trainees in the proctoring phase.Adopting a common approach through the use of deconstructed procedural descriptions also strengthens data comparability, which could provide useful feedback to improve the programmes as a whole.
The role of this review was to collate published procedural descriptions to allow for the consolidation of these into assessable components to guide training in robotic colorectal surgery involving core procedures only; however, several limitations are noted with the current available data.Advanced or complex cases were excluded as they are not the focus of initial design of curriculum in robotic colorectal surgery.This, however, demonstrated the publication bias in publishing procedural descriptions as journals tend to publish innovation and advanced approaches in the form of case reports, series, or video vignettes.One-off, unique case reports do not represent a form of systematic development of knowledge or consensus opinion and are therefore not appropriate for generation of a training curriculum.Whilst important to support this avenue of academic surgical progress, equity should be given to training approaches as well as novel technologies in publishing.A dedicated international approach to a training library may assist with this.Similarly, it is acknowledged that there will be far more published descriptions of robotic colorectal surgical procedures within other publication types, such as interventional trials and systematic reviews and metanalyses.As a training tool however, these embedded descriptions have limited searchability and accessibility for trainees.Additionally, most of these procedural descriptions have a focus separate to training, limiting their application to training design.
From an educational perspective, incorporating procedural descriptions has benefits for both trainees and trainers.Structured guidance reduces the cognitive load of planning and facilitating from the trainers, leading to improved opportunity and autonomy for trainees.This also creates a shared language that trainers and trainees can use to structure an individualised training pathway based on individual skill and speed of skill acquisition.
Procedural deconstruction for the development of procedural descriptions and component-based operative training in robotic colorectal surgery becomes increasingly relevant when considering its potential applications.Firstly, international consensus for training represents an important step towards developing patient safety standards in robotic colorectal surgery [39], which is essential to progress towards internationally recognised accreditation in robotic colorectal surgery.
There are challenges in adopting component operating based on procedural descriptions.There is discussion as to whether standardisation of a procedure is the right approach to training in surgery.This stems from concern that standard approaches limit innovation and adaptability in trainees and teach static and fixed thinking in the operating room [47].Similarly, there is surgeon-to-surgeon variability which cannot be captured with a standard approach [48].This requires a change in terminology as recommended and a change in mindset of proctoring surgeons to teach first the training approach, giving trainees the building blocks to then develop their own approach, incorporating any standardised components as required.
It is noted that the methodology for generating consensus opinions is associated with a significant time and resource cost especially when considering the depth and breadth of robotic colorectal surgical procedures.An approach addressing this may be through distilling the curriculum to a set of core colorectal procedures with critical component competencies that when acquired, are transferable to performing other, non-core procedures.
At a system-based level, guidance is required regarding the appropriate integration of this approach.This requires assessment of the cognitive and technical difficulty of each procedural component and benchmarking to ensure appropriate graded progression.Assessment of the appropriate difficulty of procedural steps for a trainees may be achieved through learning curve analysis, with steps assigned to the component console surgeon in consideration of their previous experience.Further studies into the standardisation of assessment of technical skills is required [6].

Conclusion
This review highlights the value in development of procedural descriptions and their utility in structured component-based robotic colorectal surgical training.Further dedicated effort should be directed towards development of deconstructed procedural descriptions (DPDs) to guide component-based parallel training in robotic colorectal surgery and build an international approach to robotics education.Future directions should be focused on enhancing the educational value of this approach.With improvements in technology this includes a proficiency-based progressive training approach which harnesses individualised data collection to guide trainees through component operating appropriate for their level of skill, and structured development of competency and proficiency standards for robotic colorectal operative components.

Fig. 1
Fig. 1 PRISMA flow diagram of included studies

Table 1
Details of included publications

Table 2 Definitions a a
Three expert robotic colorectal surgeons involved in robotic surgical education reviewed the available literature and participated in group discussion to formulate the above definitions